Version 10.0 – July 2014
15
A batch of theophylline was obtained from a commercial supplier of reagents.
This material is intended for use in the validation of new methods, and monitoring the
performance of methods and instruments commonly used in clinical laboratories to
determine the theophylline content of human blood samples. It can also be used in
the training and evaluation of staff.
Certified Value
Purity ......... 99.95 + 0.05/- 0.08 mass %
A batch of PCB 77 was obtained from a commercial supplier.
This material is primarily intended as a calibration standard in methods of analysis of
PCB 77 in environmental and other relevant matrices.
Certified Value
Purity ............... 99.8 + 0.2/- 0.3 mass %
A batch of PCB 126 was obtained from a commercial supplier.
This material is primarily intended as a calibration standard in methods of analysis of
PCB 126 in environmental and other relevant matrices.
Certified Value
Purity ....................... 98.9 ± 0.3 mass %
A batch of PCB 169 was obtained from a commercial supplier.
This material is primarily intended as a calibration standard in methods of analysis of
PCB 169 in environmental and other relevant matrices.
Certified Value
Purity ............... 99.4 + 0.6/- 1.3 mass %
This material is intended for method validation purposes and for checking instrument
calibration for the measurement of polychlorinated biphenyls.
Certified Values
PCB 28 .......................... 703 ± 15 µg/kg PCB 138 ........................ 678 ± 37 µg/kg
PCB 52 ............................ 706 ± 7 µg/kg PCB 153 .......................... 702 ± 8 µg/kg
PCB 101 ......................... .696 ± 7 µg/kg PCB 180 .......................... 700 ± 9 µg/kg
PCB 118 .......................... 712 ± 9 µg/kg
Indicative Values
PCB 31 ................................. .697 µg/kg PCB 163 ................................689 µg/kg
PCB 77 .................................. 697 µg/kg PCB 170 ................................693 µg/kg
PCB 110 ................................ 690 µg/kg PCB 187 ................................693 µg/kg
PCB 149 ................................ 695 µg/kg PCB 194 ................................693 µg/kg
A batch of p,p’-DDE was obtained from a commercial supplier, ground and dried
under vacuum.
This material is intended for use in the preparation of solutions for the calibration of
analytical instruments used in pesticide residue and formulation analysis.
Certified Value
Purity ....................... 99.6 ± 0.4 mass %
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